Old Style Sinatra App which works with public files

# app1.rb

### APP 1 (Old Style) does work with static files in /public

require 'rubygems'
require 'sinatra'
  
get '/' do
  "Hello world! from Sinatra v#{Sinatra::VERSION}"
  # => Hello world! from Sinatra v0.9.0.4
end

Scoped Sinatra App with Non-Working public files

require 'rubygems'
require 'sinatra'

### APP 2 (Scoped Style) 
### does NOT work with static files in /public

class MyApp < Sinatra::Base
  
  # enable :static
  
  set :public, File.dirname(__FILE__) + '/public'
  
  set :root, File.dirname(__FILE__)
  
  get '/' do
    "Hello world! from Sinatra v#{Sinatra::VERSION}"
    # => Hello world! from Sinatra v0.9.0.4
  end
  
end

# non-default port so that I can have two apps running
# side by side
MyApp.run!(:port => 4568 )

WORKING Scoped Sinatra App with public files support

require 'rubygems'
require 'sinatra/base'

### APP 3 (Scoped Style) 
### does work with static files in /public

class MyApp < Sinatra::Base
  
  ## need to enable static files from the public directory
  enable :static, :public
  
  ## this is optional in this case
  # set :root, File.dirname(__FILE__)
  
  ## this must be set or else the loading of static files from public bails with major blowup:
  ## ERROR:
  # Read error: #<NoMethodError: undefined method `+' for true:TrueClass>
  # .../sinatra/lib/sinatra/base.rb:773:in `GET (?-mix:.*[^\/]$)'
  set :public, File.dirname(__FILE__) + '/public'

  
  set :logging, true
  
  get '/' do
    "Hello world! from Sinatra v#{Sinatra::VERSION}"
    # => Hello world! from Sinatra v0.9.0.4
  end
  
end

# non-default port so that I can have two apps running
# side by side
MyApp.run!(:port => 4569 )